Because ninjas are fast, you must know how to quickly copy a widget from your current project to another project. While it is important to understand and familiarize yourself with the concept of libraries, sometimes you just want to quickly copy a widget(s) to another project. Here's how:
1. Save the widget(s) you wish to copy as a custom widget. Once this is done, it'll appear in the Widgets tab under the "In this project" section. You can select multiple widgets using the Shift key.
2. Go to the Widgets tab, and switch the library to your current project, which will appear under the "In this project" section.
3. Now, just right-click the widget you wish to copy, and choose "Copy to another project...".